Add Import from session -functionality

git-svn-id: svn://localhost/ardour2/branches/3.0@3805 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 108 insertions, 0 deletions

diff --git a/libs/ardour/tempo_map_importer.cc b/libs/ardour/tempo_map_importer.cc
new file mode 100644
index 0000000000..45f2c90dfa
--- /dev/null
+++ b/libs/ardour/tempo_map_importer.cc
@@ -0,0 +1,108 @@
+/*
+    Copyright (C) 2008 Paul Davis
+    Author: Sakari Bergen
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <ardour/tempo_map_importer.h>
+
+#include <sstream>
+
+#include <ardour/session.h>
+#include <pbd/failed_constructor.h>
+#include <pbd/compose.h>
+#include <pbd/error.h>
+
+#include "i18n.h"
+
+using namespace PBD;
+using namespace ARDOUR;
+
+/**** Handler ***/
+TempoMapImportHandler::TempoMapImportHandler (XMLTree const & source, Session & session) :
+  ElementImportHandler (source, session)
+{
+	XMLNode const * root = source.root();
+	XMLNode const * tempo_map;
+	
+	if (!(tempo_map = root->child (X_("TempoMap")))) {
+		throw failed_constructor();
+	}
+	
+	elements.push_back (ElementPtr ( new TempoMapImporter (source, session, *tempo_map)));
+}
+
+string
+TempoMapImportHandler::get_info () const
+{
+	return _("Tempo map");
+}
+
+/*** TempoMapImporter ***/
+TempoMapImporter::TempoMapImporter (XMLTree const & source, Session & session, XMLNode const & node) : 
+  ElementImporter (source, session),
+  xml_tempo_map (node)
+{
+	name = _("Tempo Map");
+}
+
+string
+TempoMapImporter::get_info () const
+{
+	std::ostringstream oss;
+	unsigned int tempos = 0;
+	unsigned int meters = 0;
+	XMLNodeList children = xml_tempo_map.children();
+	
+	for (XMLNodeIterator it = children.begin(); it != children.end(); it++) {
+		if ((*it)->name() == "Tempo") {
+			tempos++;
+		} else if ((*it)->name() == "Meters") {
+			meters++;
+		}
+	}
+	
+	// return info
+	oss << _("Tempo marks: ") << tempos << _("\nMeter marks: ") << meters;
+	
+	return oss.str();
+}
+
+bool
+TempoMapImporter::prepare_move ()
+{
+	// Prompt user for verification
+	bool replace = Prompt (_("This will replace the current tempo map!\nAre you shure you want to do this?"));
+	
+	if (replace) {
+		queued = true;
+	}
+	
+	return replace;
+}
+
+void
+TempoMapImporter::cancel_move ()
+{
+	queued = false;
+}
+
+void
+TempoMapImporter::move ()
+{
+	session.tempo_map().set_state (xml_tempo_map);
+}